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(No Model.) 3 Sheets-Sheet 1.,

G. T. HAM.

- TUBULAR LANTERN.

No. 285,408. Patented Sept. 25, 1883.

3 Sheets-Sheet 2.

Patented Sept. 25, 1883.

.0. T. HAM.

TUBULAR LANTERN.

(No Model.)

0000 0000 0 0000 0000 0000 0000 M a 0000 0000 moooo oooo an 0000 0000 oooo oooo w Z 0000 oooo 0000 0000 s 0000 oooo m 0000 0000 M 0000 7 0000 0 0000 0000 0000 0000 (No Model.) 3 Sheets-Sheer, 3.

0. T. HAM.

TUBULAR LANTERN. No. 285,408. Patented Sept. 25, 1883.

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N. PETERS, mlo-Lilhogluhcr. Wahingmfl. D. Q

UNITED STATES PATENT Fries.

CHARLES T. HAM, OF ROCHESTER, NE\V YORK, ASSIGNOR TO THE STEAM GAUGE AND LANTERN COMPANY, OF SAME PLACE.

LANTERN.

SPECIFICATION formingpart of Letters Patent No. 285,408, dated September 25, 1883,

Application filed July 10, 1883.

r the city of Rochester, in the county of Monroe and State of New York, have invented new and useful Improvements in Tubular Lanterns, of which the following is a specification.

This invention relates to an improvement in that class of tubular lanterns which are provided with a square or rectangular body or case.

The object of my invention is to produce a neat and attractive lamp of the kind in which tl1e'air-supply to the flame is stronger and more regular than hereto fore, and in which the air-tubes do not interfere with the use of side reflectors, so that thelamp can be successfully used as a bow-lamp for boats and ships, as, a signal-lamp for bridges, &c., andfor similar purposes,

Heretofore these lanterns have been provided with air-supply tubes arranged outside the lantern-case on both sides thereof; but

this construction is objectionable, as it is unsightly, and for the reason that the tubes in terfere with the light, and do not permit the use of the hinged side reflectors which are ordinarily used in bow-lamps. The air-supply tubes have also been arranged in the corners of the lantern-case, their upper portions forming the top thereof; but this construction is objectionable, as the tubes become hot,

whereby the downward flow of the cold air in the tubes is retarded, thereby materially reducing the supply of fresh air to the flame.

My invention is designed to produce alamp in which these difficulties are overcome; and it consists of the improvements which will be hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, consisting of three sheets, Figure 1 is a perspective view of a lantern provided with my improvement. Fig. 2 is a sectional front elevation of the lantern. Figs. 3 and 4; are horizontal sections in lines .10 at and g y, Fig. 2, respectively. Fig. 5 is a vertical section, on an enlarged scale, of the lower part of the lantern in line 00 y, Fig. 4-. Fig. 6 is a horizontal section, on an en larged scale, in line 2 2, Fig. 2. Fig. 7 is a vertical section in line w 00, Fig. 6. Fig. 8 is a bottom plan view of the lantern. Fig. 9

(No model.)

represents the upper port-ion of my improved lantern, with a different device for supplying air to the tubes.

Like letters of reference refer to like parts in the several figures.

A represents the back of the square or root angular lantern-case B, the main reflector,

secured thereto; 0 O, the panes of glass se-- cured in the sides of the lantern, and D the front glass mounted in a hinged door, whereby access is had to the interior of the case.

E is the four-sided tapering top of the case, resting upon the frame of the rectangular body and terminating in a cap, F, through which the products of combustion escape from the lantern.

9 represents the burner, G the oil reservoir, and vertical air-tubes, open at both ends and extending from the bottom of the oil-reservoir to an air-chamber, 9, formed on the top of the oil-reservoir, and communicating with the under side of the burner-cone.

h represents the bottom of the laiiterircase, and H a transverse air-chamber or flat tube, arranged below the bottom 71 7 1, are upright air-tubes, rising from the airchamber Hand extending into the air-tubes g of the oilreservoir; The latter is removable, and rests upon a horizontal plate, H, which is secured at a' short distance above the bottom h of the lantern-case. The oil-reservoir is removably attached to the plate H by.

catches 71*.

v 715 are openings, formed in the bottom 71, on both sides of the air chamber H, to admit the external. air into the lantern'case. The plate H, being located above the perforations h, serves as a deflector, which prevents strong currents of air from striking the flame. Upon releasing the catches III-the oil-reservoir can be removed for filling it or trimming the wick. The fixed tubes 71 projecting into the tubesg of the movable oilreservoir, form a tight joint in the airpassages, and hold the oil-reservoir firmly when the lantern is being moved about.

Z Z are deflecting-plates secured to the under side of the perforated bottom plate, at right angles to each other, for the purpose of pre venting ai rcurrents from blowing uninterrupt cdl y across the perforatedbottom an d exhausting the air from the lantern-case,whereby the flame would be disturbed and its illuminatingpower reduced. The plate Z extends into the air-chamber H throughout its entire length, and the plate Z extends into the air-chamber H, with its central portion standing at right angles to the plate Z,whereby the bottom of the air-chamber H is divided into four compartments, corresponding with the four air-supply tubes I. If the wind affects one air-supply tube more than another, the deflecting-plates, proj ectinginto th eairchamber H, prevent such disturbances from being communicated from one tube to the other with such force as to dis turb the flame. These deflecting-plates thereby equalize the airsupply to the burner-cone and insure a steady bright flame under all conditions of exposure to varying air-currents.

I represents the upright air-supply tubes. The lower portions,v3,ofthesetubes arearranged within the lantern-case, in the corners thereof, and communicate at their lower ends with horizontal air-chamber I, which in turn communicates with the air-chamber H. The upper portions, 1, of the air-tubes penetrate the tapering top E at its base, and extend upwardly along the edges of the top to the base of the cap F, the edges of the top being made blunt, as represented in Figs. 1 and 3, to clear the tubes. The upper ends of the air-supply tubes turn inwardly, and extend through the lower portion of the cap F to the central air-supply tube, J, which is closed at its upper end and provided at its lower end with aflaring mouth, K, located over the flame. The external air enters the lantern-case through the perforations h in its bottom, becomes heated by the flame, and enters the flaring mouth K, ascends in the pipe J, descends through thetubes I, enters the air-chamber H, and reaches the flame through the air-passagesg and the burner-cone. In passing through the upper portions, '5, of the tubes I, which are located on the outside of the top F, the air becomes cool, as these portions of the tubes are protected against the heat of the flame by the top F, and also exposed to the cooling influence of the surrounding atmosphere. The lower portions, 1',

y of the tubes I are arranged at a sufficient disof the tubesare on the inner sides of the lantern-case, they do not interfere with the movements of the side-reflectors and do not obstruct the light.

The top of the lantern can be considerably contracted, thereby producing a compact and attractive lantern,without danger of the upper portions of the tubes becoming heated.

Instead of supplying the air to the tubes from the interior of the lamp-case, it may be supplied from the exterior atmosphere by a suitable injector, K, as represented in Fi 9.

I claim asmy invention- 1. The combinatiomwith a lanterncase hav ing a, perforated bottom, of a burner, an airchamber underneath the burner, air-supply tubes conducting the air downwardly from the upper portion of the lantern to the air-chanr ber underneath the burner, and deflectingplates secured to the under side of the perforated bottonr between the air-conduits, and adapted to break air-currents blowing across the perforated bottom, substantially as set forth.

2. The combination, with a lantern-case, of

u Jri 'ht air-su )1 Y tubes I a burner a horil b I 5 7 7 zontal airpassage leading from the lower ends of the air-tubes to the under side of the burner-cone, and intersecting deflecting-plates arranged in said air-passage, substantially as set forth.

3. The combination, with a lantern-casehav ing a perforated bottom, of air-supply tubes, a burner, a horizontal air-passage leading from the air-supply tubes to the under side of the burner-cone, and deflecting-plates projecting below the perforated bottom and into the horizontal airpassage, substantially as set forth.

4. A lamp or lantern provided with airsupply tubes having their lower portions arranged within the lantern-case and their upper portions outside of the same, substantially as set forth.

.3. A lamp or lantern constructed with a rectangular body, a tapering top resting on the same, and air-supply tubes having their lower portions arr. nged within the rectangular body and their upper portions outside of the tapering top, substantially as set forth.

6. The combination, in a lamp or lantern, of a case having transparent sides, movable side reflectors, a burner, and air-supply tubes having their lower portions arranged within the case and their upper portions outside of the case, substantially as set forth.

CHARLES T. HAM.

Vitnesses:

G. L. SALMON, OHAs. F. GEYBR. 

